Robert Lacey features in The Express article about the upcoming Channel 4 documentary series, the Royal House of Windsor.
The documentary reveals that the Royal Family changed their name from Saxe-Coburg-Gotha during World War 1 in the hopes of hiding their deep German roots.
The family were considering changing their name as the UK was increasingly anti-German as well as becoming more and more anti-Royal.
Then, on June 13, 1917, there was a German bombing raid in London that killed 162 people across London including 18 children at the Upper North Street School in Poplar.
Historian Robert Lacey explained why this bombing was so significant in the final decision to switch.